Evaluation Model Based on Analytic Hierarchy Process and Applications in Indoor Air Quality Monitoring System

Analytic Hierarchy Process (AHP), which was originally introduced by Professor T. L. Satty, is an effective method to make a quantitative analysis for the non-quantitative analytical case. In recent years, two evaluation models based on AHP have been proposed for indoor air quality (IAQ) by the environmental experts from home and abroad. One is Indoor Assessment by the Analytical Hierarchy (IAAH), and the other is Fuzzy AHP, which is combined fuzzy computing and AHP. In this paper, the two models are constructed and respectively applied in the IAQ evaluation. Here an experiment is designed to compare them from the applicable condition in the IAQ monitoring system. The results show that IAAH is suitable for the monitoring system which makes an environmental assessment at a long interval, e.g. 1 hour and 8 hours. On the contrary, Fuzzy AHP is more suitable for that which makes an environmental assessment at a short interval, e.g. 5 minutes and 10 minutes.